08. Solving a chemistry problem

5. The rate constant of the homogeneous molecular process of cis-trans isomerization of butene-2 at 4170C is 1.6*106 s-1. The equilibrium constant at this temperature is 1.14. At the initial moment of time, only the cis isomer is present in the system. Calculate: 1) time to achieve equilibrium; 2) time of change in the concentration of the cis-isomer by 2.6 mol%.